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mirror of https://github.com/octoleo/restic.git synced 2024-12-25 20:11:06 +00:00
restic/internal/selfupdate/verify.go

188 lines
10 KiB
Go
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package selfupdate
import (
"bytes"
"fmt"
"golang.org/x/crypto/openpgp"
)
var key = []byte(`
-----BEGIN PGP PUBLIC KEY BLOCK-----
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CwGc
=AV20
-----END PGP PUBLIC KEY BLOCK-----
`)
// GPGVerify checks the authenticity of data by verifying the signature sig,
// which must be ASCII armored (base64). When the signature matches, GPGVerify
// returns true and a nil error.
func GPGVerify(data, sig []byte) (ok bool, err error) {
keyring, err := openpgp.ReadArmoredKeyRing(bytes.NewReader(key))
if err != nil {
fmt.Printf("reading keyring failed")
return false, err
}
_, err = openpgp.CheckArmoredDetachedSignature(keyring, bytes.NewReader(data), bytes.NewReader(sig))
if err != nil {
return false, err
}
return true, nil
}